Month: January 2023

Preparation and thermophysical study on a super stable copper oxide/deep eutectic solvent nanofluid was written by Liu, Changhui;Yan, Yu;Sun, Wenjie;Shi, Xiancong;Shi, Ningyu;Huo, Yixuan;Zhao, Jiateng;Said, Zafar;Sharifpur, Mohsen. And the article was included in Journal of Molecular Liquids in 2022.Safety of Cuprichydroxide This article mentions the following:

Nanofluid has gained vast attention as a novel heat transfer working fluid owing to its superiority in thermal conductivity and rheol. properties. Meanwhile, the liquid range and the stability of nanofluids are of great significance since it dominates the utilization scope of a working fluid. In this work, with the aim at solving the poor stability associated with short liquid range of traditional nanofluids, a novel “one-step” preparation protocol was developed using Cu(OH)₂ as a precursor and deep eutectic solvents (DESs) as dispersing medium. The as-prepared nanofluid bears an extraordinary static stability that can be kept for at least two months without observation of any sedimentation thanks to the in-situ formed Cu₂O nanoparticle in DESs under a microwave irradiation condition and wide liquid range attributed to the low saturated pressure of DESs. Structural anal., such as SEM, TEM, XRD, XPS and FTIR anal., and thermophys. properties of the nanofluids were subject to a comprehensive study. Thermal conductivity anal. indicated that the presence of Cu₂O nanoparticle slightly impacts the thermal conductivity when the mass fraction of the nanoparticle is small. Notably, this DESs based nanofluid features promising photothermal conversion that can reach 83.74% with the addition of 0.1 wt% Cu₂O nanoparticle. This study provides an important avenue for the preparation of nanofluids with high static stability. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Safety of Cuprichydroxide).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. These ligands enable the reaction promoted in mild condition. The reaction scope has also been greatly expanded, rendering this copper-based cross-coupling attractive for both academia and industry. Safety of Cuprichydroxide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Electrochemical Stability of Zinc and Copper Surfaces in Protic Ionic Liquids was written by Greaves, Tamar L.;Dharmadana, Durga;Yalcin, Dilek;Clarke-Hannaford, Jonathan;Christofferson, Andrew J.;Murdoch, Billy J.;Han, Qi;Brown, Stuart J.;Weber, Cameron C.;Spencer, Michelle J. S.;McConville, Chris F.;Drummond, Calum J.;Jones, Lathe A.. And the article was included in Langmuir in 2022.Application of 20427-59-2 This article mentions the following:

Ionic liquids are versatile solvents that can be tailored through modification of the cation and anion species. Relatively little is known about the corrosive properties of protic ionic liquids In this study, we have explored the corrosion of both zinc and copper within a series of protic ionic liquids consisting of alkylammonium or alkanolammonium cations paired with nitrate or carboxylate anions along with three aprotic imidazolium ionic liquids for comparison. Electrochem. studies revealed that the presence of either carboxylate anions or alkanolammonium cations tend to induce a cathodic shift in the corrosion potential. The effect in copper was similar in magnitude for both cations and anions, while the anion effect was slightly more pronounced than that of the cation in the case of zinc. For copper, the presence of carboxylate anions or alkanolammonium cations led to a notable decrease in corrosion current, whereas an increase was typically observed for zinc. The ionic liquid-metal surface interactions were further explored for select protic ionic liquids on copper using XPS and SEM (SEM) to characterize the interface. From these studies, the oxide species formed on the surface were identified, and copper speciation at the surface linked to ionic liquid and potential dependent surface passivation. D. functional theory and ab initio mol. dynamics simulations revealed that the ethanolammonium cation was more strongly bound to the copper surface than the ethylammonium counterpart. In addition, the nitrate anion was more tightly bound than the formate anion. These likely lead to competing effects on the process of corrosion: the tightly bound cations act as a source of passivation, whereas the tightly bound anions facilitate the electrodissolution of the copper. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Application of 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Application of 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Modification of a Cu Mesh with Nanowires and Magnesiophilic Ag Sites to Induce Uniform Magnesium Deposition was written by Wang, Fei;Wu, Dongzheng;Zhuang, Yichao;Li, Jialin;Nie, Xianzhen;Zeng, Jing;Zhao, Jinbao. And the article was included in ACS Applied Materials & Interfaces in 2022.Name: Cuprichydroxide This article mentions the following:

The nature of dendrite-free magnesium (Mg) metal anodes is an important advantage in rechargeable magnesium batteries (RMBs). However, this traditional cognition needs to be reconsidered due to inhomogeneous Mg deposits under extreme electrochem. conditions. Herein, we report a three-dimensional (3D) Cu-based host with magnesiophilic Ag sites (denoted as “Ag@3D Cu mesh”) to regulate Mg deposition behaviors and achieve uniform Mg electrodeposition. Mg deposition/stripping behaviors are obviously improved under the cooperative effect of nanowire structures and Ag sites. The test results indicate that nucleation overpotentials are reduced distinctly and cycling performances are prolonged, suggesting that the general rules of 3D structures and affinity sites improve the durability and reversibility of Mg deposition/stripping. Besides, a unique concave surface structure can induce Mg to deposit into the interior of the interspace, which utilizes Mg more efficiently and leads to improved electrochem. performances with limited Mg content. Furthermore, in situ optical microscopic images show that the Ag@3D Cu mesh can attain a smooth surface, nearly without Mg protrusions, under 8.0 mA cm-2, which prevents premature short circuits. This report is a pioneering work to demonstrate the feasibility of modification of Cu-based current collectors and the necessity of functional current collectors to improve the possibility of practical applications for RMBs. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Name: Cuprichydroxide).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Copper catalyst has received great attention owing to the low toxicity and low cost. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Name: Cuprichydroxide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Synergistic nanowire-enhanced electroporation and electrochlorination for highly efficient water disinfection was written by Huo, Zheng-Yang;Winter, Lea R.;Wang, Xiao-Xiong;Du, Ye;Wu, Yin-Hu;Hubner, Uwe;Hu, Hong-Ying;Elimelech, Menachem. And the article was included in Environmental Science & Technology in 2022.COA of Formula: CuH2O2 This article mentions the following:

Conventional water disinfection methods such as chlorination typically involve the generation of harmful disinfection byproducts and intensive chem. consumption. Emerging electroporation disinfection techniques using nanowire-enhanced local elec. fields inactivate microbes by damaging their outer structures without byproduct formation or chem. dosing. However, this phys.-based method suffers from a limited inactivation efficiency under high water flux due to an insufficient contact time. Herein, we integrate electrochlorination with nanowire-enhanced electroporation to achieve a synergistic flow-through process for efficient water disinfection targeting bacteria and viruses. Electroporation at the cathode induces sub-lethal damages on the microbial outer structures. Subsequently, electrogenerated active chlorine at the anode aggravates these electroporation-induced injuries to the level of lethal damage. This sequential flow-through disinfection system achieves complete disinfection (>6.0-log) under a very high water flux of 2.4 x 10⁴ L/(m² h) with an applied voltage of 2.0 V. This disinfection efficiency is 8 times faster than that of electroporation alone. Further, the specific energy consumption for the disinfection by this novel process is extremely low (8 x 10^-4 kW h/m³). Our results demonstrate a promising method for rapid and energy-efficient water disinfection by coupling electroporation with electrochlorination to meet vital needs for pathogen elimination. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2COA of Formula: CuH2O2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. COA of Formula: CuH2O2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Oriented construction Cu₃P and Ni₂P heterojunction to boost overall water splitting was written by Liu, Huibing;Gao, Jing;Xu, Xinchen;Jia, Qiaohuan;Yang, Liu;Wang, Shitao;Cao, Dapeng. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Application In Synthesis of Cuprichydroxide This article mentions the following:

Development of efficient and earth-abundant bifunctional catalysts towards oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is imperative to overall water splitting. Herein, in-situ vertically grown bimetallic phosphide nanosheets containing abundant Cu₃P/Ni₂P heterogeneous interfaces are successfully synthesized on Cu foam (marked as Cu₃P/Ni₂P@CF) as the bifunctional electrocatalyst for both HER and OER. Owing to the synergistic effects of electronic regulation of heterojunction and the hierarchical array structure on 3D substrate, the Cu₃P/Ni₂P@CF integrated electrode displays the overpotential of 330 mV @ 50 mA cm^-2 for OER and 88.1 mV @ 10 mA cm^-2 for HER in 1 M KOH. Interestingly, the catalyst -based water electrolyzer only demands a low cell voltage of 1.56 V@10 mA cm^-2, exceeding the integrated Pt/C + IrO₂ counterpart. D. functional theory (DFT) results further disclose that the charge rearrangement of heterogeneous interface can not only endow the hydrogen binding energy (ΔG*H) approach to zero, but also boost the H₂O dissociation and *OH desorption via multi-site synergy for HER. This work provides a valuable approach to construct advanced materials towards overall water splitting. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Application In Synthesis of Cuprichydroxide).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Application In Synthesis of Cuprichydroxide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Copper mobilisation from Cu sulphide minerals by methanobactin: Effect of pH , oxygen and natural organic matter was written by Rushworth, Danielle D.;Christl, Iso;Kumar, Naresh;Hoffmann, Kevin;Kretzschmar, Ruben;Lehmann, Moritz F.;Schenkeveld, Walter D. C.;Kraemer, Stephan M.. And the article was included in Geobiology in 2022.Electric Literature of CuH2O2 This article mentions the following:

Aerobic methane oxidation (MOx) depends critically on the availability of copper (Cu) as a crucial component of the metal center of particulate methane monooxygenase, one of the main enzymes involved in MOx. Some methanotrophs have developed Cu acquisition strategies, in which they exude Cu-binding ligands termed chalkophores under conditions of low Cu availability. A well-characterised chalkophore is methanobactin (mb), exuded by the microaerophilic methanotroph Methylosinus trichosporium OB3b. Aerobic methanotrophs generally reside close to environmental oxic-anoxic interfaces, where the formation of Cu sulfide phases can aggravate the limitation of bioavailable Cu due to their low solubility The reactivity of chalkophores towards such Cu sulfide mineral phases has not yet been investigated. In this study, a combination of dissolution experiments and equilibrium modeling was used to examine the dissolution and solubility of bulk and nanoparticulate Cu sulfide minerals in the presence of mb as influenced by pH, oxygen and natural organic matter. In general, we show that mb is effective at increasing the dissolved Cu concentrations in the presence of a variety of Cu sulfide phases that may potentially limit Cu bioavailability. More Cu was mobilised per mol of mb from Cu sulfide nanoparticles compared with well-crystalline bulk covellite (CuS). In general, the efficacy of mb at mobilising Cu from Cu sulfides is pH-dependent. At lower pH, e.g. pH 5, mb was ineffective at solubilizing Cu. The presence of mb increased dissolved Cu concentrations between pH 7 and 8.5, where the solubility of all Cu sulfides is generally low, both in the presence and absence of oxygen. These results suggest that chalkophore-promoted Cu mobilisation from sulfide phases is an effective extracellular mechanism for increasing dissolved Cu concentrations at oxic-anoxic interfaces, particularly in the neutral to slightly alk. pH range. This suggests that aerobic methanotrophs may be able to fulfil their Cu requirements via the exudation of mb in natural environments where the bioavailability of Cu is constrained by very stable Cu sulfide phases. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Electric Literature of CuH2O2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents has turned up as an exceedingly robust synthetic tool. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Electric Literature of CuH2O2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Removal of Heavy Metals from Industrial Wastewater by Chemical Precipitation: Mechanisms and Sludge Characterization was written by Benalia, Mohamed Charif;Youcef, Leila;Bouaziz, Mohamed Ghrissi;Achour, Samia;Menasra, Hayet. And the article was included in Arabian Journal for Science and Engineering in 2022.Related Products of 20427-59-2 This article mentions the following:

Chem. precipitation using lime (Ca(OH)₂), caustic soda (NaOH) and soda ash (Na₂CO₃) for the removal of simultaneous heavy metals (Cu(II) and Zn(II)) from industrial wastewater of the cable industry was carried out in laboratory by jar tests. For each reagent used, an improvement in copper and zinc removal efficiency was obtained by increasing the precipitating reagent dose (10-400 mg/L). Efficiencies of over 90% can be achieved. Chem. precipitation efficiency is related to the pH of the treatment. At a high final pH level (8 < pH < 10), the removal efficiency of copper for each precipitating agent is slightly higher than that of zinc and the residual metal contents were in conformity with industrial discharge standards In sludge product, zinc and copper were precipitated as amorphous hydroxides including Zn(OH)₂ and Cu(OH)₂. Based on XRD anal., the presence of an amount of other addnl. phases was noticed for copper. SEM images show that sludges produced are not large in size and are compact in structure. Corresponding EDX (energy-dispersive X-ray spectroscopy) shows that the amount of copper is higher than the amount of zinc in all recovered sludge. Wastewater treatment with soda ash resulted in a lower volume and a large product size of sludge. As a result, drying steps can be less expensive. This is a significant advantage comparably with the other precipitating agents. Soda ash may be considered as cost-effective precipitating agent for Cu(II) and Zn(II) in the industrial wastewater of the cable industry. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Related Products of 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Related Products of 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

XAFS and HAXPES analyses of the oxidation state of a copper surface buried under a phenolic resin nanofilm was written by Izumi, Atsushi;Shudo, Yasuyuki;Kakara, Takeshi. And the article was included in Applied Surface Science in 2022.Safety of Cuprichydroxide This article mentions the following:

The oxidation state of a buried copper surface under a phenolic resin insulating layer was investigated by nondestructive anal. methods using conversion electron yield X-ray absorption fine structure (CEY-XAFS) and hard XPS (HAXPES). The formation of Cu₂O and CuO during heat treatment at 180°C in air and the formation of Cu(OH)₂ and CuCO₃ during long-term storage under atm. conditions at room temperature proceeded on the buried copper surface to a depth of tens of nanometers. The phenolic resin nanofilm suppressed the thermal oxidation of the underlying Cu to Cu₂O and CuO by 20% but did not suppress the formation of native oxides Cu(OH)₂ and CuCO₃ under atm. conditions because of the high water absorption and high permeability of the phenolic resin nanofilm. This study demonstrated that CEY-XAFS and HAXPES technique are the powerful tools for investigation of oxidation states of the copper surface buried under the phenolic resin insulating layer. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Safety of Cuprichydroxide).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Safety of Cuprichydroxide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Oxygen vacancies in Cu/TiO₂ boost strong metal-support interaction and CO₂ hydrogenation to methanol was written by Zhang, Chenchen;Wang, Letian;Etim, Ubong Jerome;Song, Yibing;Gazit, Oz M.;Zhong, Ziyi. And the article was included in Journal of Catalysis in 2022.Safety of Cuprichydroxide This article mentions the following:

How to efficiently activate and convert CO2 through hydrogenation to value-added chems. is a major challenge. This work investigates the role of oxygen vacancy (Ov) in the Cu/TiO₂ catalysts, which are promising for this reaction. The TiO_2-x support was pre-reduced in high-pressure H₂ gas at different temperatures to generate Ov with different concentrations Cu/TiO_2-x-500 with TiO₂ pre-reduced at 500 °C showed much higher CO₂ conversion and CH₃OH selectivity than the other Cu/TiO₂ catalysts. The Ov in the reduced TiO₂ induced a strong metal-support interaction (SMSI) between Cu and TiO₂ at relatively low temperatures Although the SMSI caused partial covering of the Cu nanoparticles by TiO_2-x, the Ov in the newly formed interface could facilitate the activation of the CO₂ mols. and promote the formation of the proper reaction intermediates for methanol formation. Various characterizations, including DFT calculations, revealed the detailed structural evolution of CO₂ to methanol on the Cu/TiO₂ catalyst, and it follows the Formate pathway. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Safety of Cuprichydroxide).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Safety of Cuprichydroxide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Rh single atoms/clusters confined in metal sulfide/oxide nanotubes as advanced multifunctional catalysts for green and energy-saving hydrogen productions was written by Nguyen, Dinh Chuong;Doan, Thi Luu Luyen;Prabhakaran, Sampath;Kim, Do Hwan;Kim, Nam Hoon;Lee, Joong Hee. And the article was included in Applied Catalysis, B: Environmental in 2022.Reference of 20427-59-2 This article mentions the following:

In this work, smart strategies are conducted to design advanced multifunctional electrocatalysts: Co₃S₄/CoO_x heterostructured nanosheets-assembled nanotube arrays on 3D framework integrated with single Rh atoms and subnanometer clusters. The catalyst can reach c.d. of 10 mA cm^-2 at low overpotentials of 248.2, and 56.1 mV for oxygen evolution reaction, and hydrogen evolution reaction, resp. The catalyst also shows very low potential of 1.32 V for urea oxidation reaction at 10 mA cm^-2. A water electrolyzer that achieves c.d. of 10 mA cm^-2 at small cell voltage of 1.45 V is prepared under action of the developed catalyst. We also conduct urea electrolysis assembled with the catalyst and find that the device requires a cell voltage of only 1.35 V to drive a c.d. of 10 mA cm^-2, proving the great potential of our catalyst for simultaneous energy-saving H₂ production and the treatment of urea-rich wastewater. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Reference of 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Reference of 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”